a)
x=1
L=2⋅(1−3)+5= 2⋅(−2)+5= −4+5=1
P=31−1+1=0+1=1
L=P
x=3
L=2⋅(3−3)+5= 2⋅0+5=0+5=5
P=33−1+1=32+1=132
L=P
x=5
L=2⋅(5−3)+5= 2⋅2+5=4+5=9
P=35−1+1=34+1=131+1=231
L=P
b)
x=1
L=−3,5⋅1+1,5= −3,5+1,5=−2
P=4[2−10(1−1)]+2= 4[2−10⋅0]+2= 4⋅2+2=10
L=P
x=3
L=−3,5⋅3+1,5= −10,5+1,5=−9
P=4[2−10(3−1)]+2= 4⋅[2−10⋅2]+2= 4⋅[2−20]+2=
=4⋅(−18)+2
L=P
x=5
L=−3,5⋅5+1,5= −17,5+1,5= −16
P=4[2−10(5−1)]+2= 4[2−10⋅4]+2= 4⋅(2−40)+2=
=4⋅(−38)+2
L=P
c)
x=1
L=1−31−2⋅1= 1−31−2= 1−3−1= 1+31=131
P=1−1=0
L=P
x=3
L=1−31−2⋅3= 1−31−6= 1−3−5= 1+35=1+132=232
P=3−1=2
L=P
x=5
L=1−31−2⋅5= 1−31−10= 1−3−9= 1+39=1+3=4
P=5−1=4
L=P
d)
x=1
L=48−2⋅1+2⋅1= 48−2+2= 46+2=23+2=121+2=321
P=1,5⋅1+2=1,5+2=3,5
L=P
x=3
L=48−2⋅3+2⋅3= 48−6+6= 42+6=621
P=1,5⋅3+2= 4,5+2=6,5
L=P
x=5
L=48−2⋅5+2⋅5= 48−10+10= −42+10= 921
P=1,5⋅5+2= 7,5+2=9,5
L=P